Can i get the flu after having the flu shot? – flu vaccines trigger antibodies to develop within the physique about two weeks after vaccination.
These antibodies present safety in opposition to an infection with circulating influenza viruses.
Seasonal flu vaccines are designed to guard in opposition to the influenza viruses that analysis signifies will probably be commonest through the upcoming season.
All flu vaccines in the usa are “quadrivalent” vaccines, which suggests they shield in opposition to 4 completely different flu viruses: an influenza a(h1n1) virus, an influenza a(h3n2) virus, and two influenza b viruses.